I am a 68 year old male. I have atrial fibrillation and I am being treated for that by my local doctor (a cardiologist) in the Los Angeles area for approximately 10 years and have had no troubles using the prescribed medication: Pradaxa, Cardiziem, Lanoxin, and Lisinopril. I am also using Simvastatin to control my high blood pressure. I have been on this combination for around 10 years with no problems. In the last 4-5 days I have been experiencing dizziness when I go from sitting to standing or when arising from bed. In addition, in bed when I roll over to place myself on my left side, I experience the dizziness which lasts for about 10 seconds. I am active and regularly take a 30 minute walk around my neighborhood. I still can do all my activities, but I am concerned about the dizziness. I am scheduled to see my primary care physician in November, but I am thinking this may be serious enough to go in right away. I would like your opinion.